How to toggle the menu bar back?
Late answer, but menu bar that @so_confused was looking for is just another Blender view/panel/window, just like the Properties panel or the 3D View port. You just need to add a window/panel of type "Info" and position it where you want it (default location is at the top). It will likely show the console output at the top, which you can just hide by dragging the bar edge up to cover the console. 



For those who've lost the icon/dropdown altogether, you need to pull up the hidden bar from the bottom of the panel. Here's a sample video to illustrate: https://youtu.be/uB7F4O3Ju5o